Around the film

The film was a huge commercial success at the time, just ahead of the box office by Autant in the wind , released in the course of the previous year.

The special effects sequences , which for the time were considered the ultimate, served for an impressive number of other low-budget productions until the mid-1960s.

When it was released in the UK , the footage was heavily censored for complying with the strict animal cruelty laws in front of a camera.

DW Griffith , who began working on the project, gave up filming for artistic differences with the production, going so far as to deny his name to the credits. The producer Hal Roach , as well as his son, took care of finishing it.

This film, as well as its remake produced by the firm Hammer Film Productions in 1966, was heavily criticized for having scrupulously made rubbing humans and dinosaurs at the same time.